Vonage added evidence to the pile that integrating several different media can be much more effective, telling a group of marketers that its Voice over IP product experienced a big sales boost after it diversified its advertising from online-only efforts to incorporate TV and print. Vonage had previously had one of the most popular online affiliate marketing programs, blitzing web users with such a high amount of frequency, that its diminishing rate of creative returns may impact these online results for some time. Said a Vonage executive, "I do not see e-mail marketing as a growth area. Everything else is working for us."